179
FXUS64 KBRO 210235
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
935 PM CDT MON APR 20 2026
..NEW DISCUSSION, MARINE
KEY MESSAGES
UPDATED AT 933 PM CDT MON APR 20 2026
KEY MESSAGES:
* LINGERING SPRINKLES/SHOWERS THROUGH TUESDAY MORNING.
* MAINLY DRY WEDNESDAY THROUGH EARLY NEXT WEEK WITH WARMING
TEMPERATURES.
* A HIGH RISK FOR RIP CURRENTS REMAINS IN EFFECT TILL TUESDAY
MORNING.
* MOSTLY ADVERSE (SMALL CRAFT EXERCISE CAUTION) MARINE CONDITIONS
TO CONTINUE THROUGH FRIDAY.
DISCUSSION
ISSUED AT 933 PM CDT MON APR 20 2026
LATEST GOES-19 VISIBLE SATELLITE AND RADAR IMAGERY DEPICTED A BKN-
OVC DECK OF LOW LEVEL STRATUS AND STRATOCUMULUS CLOUDS OVERHEAD. A
FEW SPRINKLES WERE AROUND, BUT THE MAIN RAIN SHOWER ACTIVITY REMAINS
OFFSHORE. THIS ACTIVITY IS ASSOCIATED WITH A COASTAL TROUGH OVERHEAD
THAT HAS BEEN MEANDERING OVER THE REGION OVER THE PAST COUPLE OF
DAYS. THROUGH TUESDAY MORNING, EXPECT FOR ANY LINGERING SHOWERS TO
COME TO AN END AS THE COASTAL TROUGH DEPARTS TO OUR NORTH. EXTENSIVE
CLOUD COVER WILL CONTINUE THROUGH THE DAY ON TUESDAY THOUGH SHOWING
GRADUAL IMPROVEMENTS DURING THE AFTERNOON INTO THE EVENING HOURS.
HIGH TEMPERATURES WILL REMAIN COOLER THAN NORMAL FOR LATE APRIL
WITH VALUES TOPPING OUT IN THE LOWER 80S.
MAINLY RAIN-FREE WEATHER WILL PERSIST THROUGH THE EARLY PARTS OF
NEXT WEEK. MEANWHILE, A WARMING TREND WILL TAKE PLACE WEDNESDAY
THROUGH MONDAY OF NEXT WEEK. WEDNESDAY THROUGH SATURDAY, HIGH
TEMPERATURES WILL RANGE FROM THE UPPER 80S TO LOWER 90S NEAR THE
COAST TO THE UPPER 90S WEST. SUNDAY THROUGH MONDAY, TEMPERATURES
HEAT UP SLIGHTLY IN RESPONSE TO A STRENGTHENING 591 DAM SUB-
TROPICAL HEAT DOME TO OUR SOUTH ACROSS CENTRAL MEXICO. DAYTIME
HIGHS ARE PROGGED TO BE IN THE LOW TO MID 90S NEAR THE COAST TO
THE UPPER 90S WEST. OVERNIGHT LOW TEMPERATURES WILL MAINLY BE IN
THE 70S THROUGH EARLY NEXT WEEK.
AVIATION
(00Z TAFS)
ISSUED AT 641 PM CDT MON APR 20 2026
THROUGH 00Z WEDNESDAY.....
KEY AVIATION IDSS MESSAGES THROUGH 00Z WEDNESDAY:
* MVFR-LIFR CIGS EXPECTED TO CONTINUE THROUGH TUESDAY AFTERNOON.
* A LINGERING SHOWER OR TWO IS POSSIBLE THROUGH TUESDAY AFTERNOON.
THE MAIN WEATHER CONCERN TO THE LOCAL TERMINALS THROUGH THE 00Z TAF
CYCLE IS THE MVFR-LIFR CIGS AND TRENDS. AS OF 6:35 PM CDT, THE
LATEST GOES-19 VISIBLE SATELLITE AND RADAR IMAGERY SHOWED A BKN-
OVC DECK OF MVFR CLOUDS OVERHEAD WITH CEILINGS RANGING BETWEEN
2,000-2,500 FEET AGL AND UNRESTRICTED VISIBILITIES. A FEW SPRINKLES
WERE AROUND, BUT THE MAIN RAIN SHOWER ACTIVITY WAS LOCATED OFFSHORE.
THIS ACTIVITY IS ASSOCIATED WITH A COASTAL TROUGH OVERHEAD THAT
HAS BEEN MEANDERING OVER THE REGION OVER THE PAST COUPLE OF DAYS.
OVER THE NEXT 6-9 HOURS OR GOING INTO TONIGHT, CEILINGS ARE
EXPECTED TO LOWER IN ELEVATION WITH IFR TO AT TIMES LIFR CIGS
DEVELOPING. IFR- LIFR CIGS WILL PERSIST THROUGH THE OVERNIGHT
HOURS INTO TUESDAY MORNING BEFORE SHOWING IMPROVEMENTS AS THE WEAK
COASTAL TROUGH CONTINUES TO WEAKEN AND DRIFT AWAY TO OUR NORTH.
BY LATE TUESDAY AFTERNOON/EVENING, FLYING CONDITIONS COULD RETURN
TO VFR/MVFR AS CLOUD COVERAGE IMPROVES. HAVE VCSH MENTIONS THIS
EVENING AND PROB30 HEADLINES AT TIMES ON TUESDAY TO ACKNOWLEDGE
THE POSSIBILITY OR PRESENCE OF SPRINKLES/RAIN SHOWERS ASSOCIATED
WITH THE WEAKENING AND DEPARTING COASTAL TROUGH.
WINDS THIS EVENING WILL BE OUT OF THE NORTHEAST IF NOT LIGHT AND
VARIABLE WITH SPEEDS BETWEEN 5-10 KTS. LATER TONIGHT, WINDS ARE
EXPECTED TO SHIFT OUT OF THE SOUTHEAST WITH MAGNITUDES BETWEEN
5-10 KTS. DURING THE DAY ON TUESDAY, INCREASING MIXING HEIGHTS
WILL ALLOW FOR SOUTHEASTERLY WINDS TO STRENGTHEN WITH SPEEDS
BETWEEN 10-15 KTS AND GUSTS AS HIGH AS 20 KTS OR SO.
MARINE
ISSUED AT 933 PM CDT MON APR 20 2026
MOSTLY ADVERSE (SMALL CRAFT EXERCISE CAUTION) CONDITIONS WILL BE
IN PLACE THROUGH FRIDAY WITH WAVE HEIGHTS OVER THE GULF WATERS
MAINLY BETWEEN 4-6 FEET. SATURDAY THROUGH MONDAY OF NEXT WEEK,
MARINE CONDITIONS BECOME MORE FAVORABLE WITH LIGHT TO MODERATE
WINDS AND MODERATE SEAS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 70 80 71 86 / 40 30 10 10
HARLINGEN 67 81 68 88 / 40 30 10 10
MCALLEN 67 82 72 91 / 30 30 10 10
RIO GRANDE CITY 63 83 70 90 / 40 20 10 10
SOUTH PADRE ISLAND 71 77 73 79 / 40 30 10 10
BAYVIEW/PORT ISABEL 69 78 70 84 / 40 30 10 10
BRO WATCHES/WARNINGS/ADVISORIES
TX...HIGH RIP CURRENT RISK UNTIL 7 AM CDT TUESDAY FOR TXZ451-454-455.
GM...NONE.
SHORT TERM...23-EVBUOMA
LONG TERM....23-EVBUOMA
AVIATION...23-EVBUOMA
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